Let MetricsService know about some Android Activities

chrome/browser/android/activity_type_ids.cc

Index: chrome/browser/android/activity_type_ids.cc
diff --git a/chrome/browser/android/activity_type_ids.cc b/chrome/browser/android/activity_type_ids.cc
new file mode 100644
index 0000000000000000000000000000000000000000..98a1724aa9a9da0654c4ff388aa43893d2c3f669
--- /dev/null
+++ b/chrome/browser/android/activity_type_ids.cc
@@ -0,0 +1,19 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/android/activity_type_ids.h"
+
+#include "base/logging.h"
+
+namespace ActivityTypeIds {
+
+Type GetActivityType(int type_id) {
+  if (type_id >= ACTIVITY_NONE && type_id <= ACTIVITY_MAX_VALUE)
+    return Type(type_id);
+
+  NOTREACHED() << "Unhandled Activity id was passed in: " << type_id;
+  return ACTIVITY_MAX_VALUE;
+}
+
+}  // namespace ActivityTypeIds